csqrtns.c File Reference

#include "precomp.h"
#include <debug.h>

Include dependency graph for csqrtns.c:

Go to the source code of this file.

Functions
VOID NTAPI	CsqRemoveIrp (PIO_CSQ UnusedCsq, PIRP Irp)
PIRP NTAPI	CsqPeekNextIrp (PIO_CSQ UnusedCsq, PIRP Irp, PVOID PeekContext)
VOID NTAPI	CsqAcquireLock (PIO_CSQ UnusedCsq, PKIRQL Irql)
VOID NTAPI	CsqReleaseLock (PIO_CSQ UnusedCsq, KIRQL Irql)
VOID NTAPI	CsqCompleteCanceledIrp (PIO_CSQ UnusedCsq, PIRP Irp)
VOID NTAPI	CsqInsertIrp (PIO_CSQ UnusedCsq, PIRP Irp)

Variables
IO_CSQ	Csq
LIST_ENTRY	IrpQueue
KSPIN_LOCK	IrpQueueLock
KSEMAPHORE	QueueSemaphore

Function Documentation

CsqAcquireLock()

VOID NTAPI CsqAcquireLock	(	PIO_CSQ	UnusedCsq,
		PKIRQL	Irql
	)

Definition at line 105 of file csqrtns.c.

{
    UNREFERENCED_PARAMETER(UnusedCsq);
    INFO_(FLOPPY, "CSQ: Acquiring spin lock\n");
    KeAcquireSpinLock(&IrpQueueLock, Irql);
}

CsqCompleteCanceledIrp()

VOID NTAPI CsqCompleteCanceledIrp	(	PIO_CSQ	UnusedCsq,
		PIRP	Irp
	)

Definition at line 135 of file csqrtns.c.

{
    UNREFERENCED_PARAMETER(UnusedCsq);
    TRACE_(FLOPPY, "CSQ: Canceling irp 0x%p\n", Irp);
    Irp->IoStatus.Status = STATUS_CANCELLED;
    Irp->IoStatus.Information = 0;
    IoCompleteRequest(Irp, IO_NO_INCREMENT);
}

CsqInsertIrp()

VOID NTAPI CsqInsertIrp	(	PIO_CSQ	UnusedCsq,
		PIRP	Irp
	)

Definition at line 155 of file csqrtns.c.

{
    UNREFERENCED_PARAMETER(UnusedCsq);
    TRACE_(FLOPPY, "CSQ: Inserting IRP 0x%p\n", Irp);
    InsertTailList(&IrpQueue, &Irp->Tail.Overlay.ListEntry);
    KeReleaseSemaphore(&QueueSemaphore, 0, 1, FALSE);
}

CsqPeekNextIrp()

PIRP NTAPI CsqPeekNextIrp	(	PIO_CSQ	UnusedCsq,
		PIRP	Irp,
		PVOID	PeekContext
	)

Definition at line 76 of file csqrtns.c.

{
    UNREFERENCED_PARAMETER(UnusedCsq);
    UNREFERENCED_PARAMETER(PeekContext);
    TRACE_(FLOPPY, "CSQ: Peeking for next IRP\n");
 
    if(Irp)
        return CONTAINING_RECORD(&Irp->Tail.Overlay.ListEntry.Flink, IRP, Tail.Overlay.ListEntry);
 
    if(IsListEmpty(&IrpQueue))
        return NULL;
 
    return CONTAINING_RECORD(IrpQueue.Flink, IRP, Tail.Overlay.ListEntry);
}

CsqReleaseLock()

VOID NTAPI CsqReleaseLock	(	PIO_CSQ	UnusedCsq,
		KIRQL	Irql
	)

Definition at line 120 of file csqrtns.c.

{
    UNREFERENCED_PARAMETER(UnusedCsq);
    INFO_(FLOPPY, "CSQ: Releasing spin lock\n");
    KeReleaseSpinLock(&IrpQueueLock, Irql);
}

CsqRemoveIrp()

VOID NTAPI CsqRemoveIrp	(	PIO_CSQ	UnusedCsq,
		PIRP	Irp
	)

Definition at line 59 of file csqrtns.c.

{
    UNREFERENCED_PARAMETER(UnusedCsq);
    TRACE_(FLOPPY, "CSQ: Removing IRP 0x%p\n", Irp);
    RemoveEntryList(&Irp->Tail.Overlay.ListEntry);
}

Variable Documentation

Csq

IO_CSQ Csq

Definition at line 46 of file csqrtns.c.

Referenced by _Function_class_(), _Releases_lock_(), CONTAINING_RECORD(), DeviceIoctl(), DriverEntry(), FltpAddMessageWaiter(), FltpGetNextMessageWaiter(), IoCsqInitialize(), IoCsqInitializeEx(), IoCsqInsertIrp(), IoCsqInsertIrpEx(), IoCsqRemoveIrp(), IoCsqRemoveNextIrp(), LockAcquireQueueLock(), LockCompleteCanceledIrp(), LockInsertIrpEx(), LockPeekNextIrp(), LockReleaseQueueLock(), MsfsAcquireLock(), MsfsCompleteCanceledIrp(), MsfsInsertIrp(), MsfsPeekNextIrp(), MsfsReleaseLock(), MsfsRemoveIrp(), QueueThread(), ReadWrite(), USBPORT_AcquireBadRequestLock(), USBPORT_AcquireIdleLock(), USBPORT_CompleteCanceledBadRequest(), USBPORT_CompleteCanceledIdleIrp(), USBPORT_InsertBadRequest(), USBPORT_InsertIdleIrp(), USBPORT_PeekNextBadRequest(), USBPORT_PeekNextIdleIrp(), USBPORT_ReleaseBadRequestLock(), and USBPORT_ReleaseIdleLock().

IrpQueue

LIST_ENTRY IrpQueue

Definition at line 49 of file csqrtns.c.

Referenced by CsqInsertIrp(), CsqPeekNextIrp(), DriverEntry(), FxRequest::GetNextRequest(), FxRequest::InsertHeadIrpQueue(), FxRequest::InsertTailIrpQueue(), FxRequest::PeekRequest(), and FxRequest::RemoveFromIrpQueue().

IrpQueueLock

KSPIN_LOCK IrpQueueLock

Definition at line 50 of file csqrtns.c.

Referenced by CsqAcquireLock(), CsqReleaseLock(), and DriverEntry().

QueueSemaphore

KSEMAPHORE QueueSemaphore

Definition at line 51 of file csqrtns.c.

Referenced by CsqInsertIrp(), DriverEntry(), and QueueThread().